I live in a pretty nasty area of town. Although the caches in my area are not in bad spots (so far), I do see a lot of needles, litter, cans, and broken glass all up and down my street. I have called about this to the police and fire department and even the mayor's office. I have broken glass on the sidewalk in front of my house almost every week. No one has helped so I have taken it upon myself to pick this stuff up. If you are finding these nasty things in your parks or community check back and make sure they get cleaned up. Of course take proper precautions (especially with needles! Don't use your hands!) if you have to be the one to clean it up. If the proper authorities are not cleaning up your area (and no one else is), then all the needles, trash and glass will keep sitting there for someone else to find.